WebModules use CHTTPSock for the HTTP server. That class requires a CModule
instance for working since it's based on CSocket. This was solved by creating a
fake module instance which is destroyed when the socket is destroyed.
The problem here was that CSocket's destructor tried to access that module
instance which was already destroyed resulting in a use-after-free.
git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1824 726aef4b-f618-498e-8847-2d620e286838
We now use a lot more data for generating the session id which is fed to a hash
to make it impossible to attack specific parts of the input.
Also we now retry generating a new session id in the (improbable) case of
collision with an existing session id.
Thanks a lot to cnu for pointing out the weakness in the old code by stealing my
session cookie, you evil hacker!
git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1819 726aef4b-f618-498e-8847-2d620e286838
